log4j2.formatMsgNoLookups=true in etc/system.properties should do the trick.

Regards
JB

> Le 12 déc. 2021 à 18:10, Oleg Cohen <oleg.co...@assurebridge.com> a écrit :
> 
> Hi JB,
> 
> Thank you for the info.
> 
> Do you have an example of how this can be dome in system.properties?
> 
> Best,
> Oleg
> 
>> On Dec 12, 2021, at 10:08 AM, JB Onofré <j...@nanthrax.net> wrote:
>> 
>> You can use system.properties to set the msg format on existing version. 
>> 
>> Else Karaf 4.3.4 will include fix by default. 
>> 
>>> Le 12 déc. 2021 à 17:54, Paul Spencer <paulspen...@mindspring.com> a écrit :
>>> 
>>> For users of Karaf 4.3.x, what is the recommended mitigation for "Apache 
>>> Log4j Remote Code Execution Vulnerability", CVE-2021-44228?
>>> 
>>> Paul Spencer
>>> 
>> 
> 

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